Signs and Symptoms of Adult ADHD

According to the diagnostic manual for mental disorders, (DSM-5; APA, 2013), the main features of ADHD are the same for children and adults. These are:

1. Inattention;

2. Hyperactivity;

3. Impulsivity.

Although adults and children with ADHD seem to have different problematic behaviors, these behaviors are rooted in the same symptom set. The symptoms just look a bit different in adults. For instance, an adult might repeatedly tap his pencil eraser on the conference table, and fidget in his chair during a meeting, whereas a child might get up and run around the classroom. In both cases, these are examples of hyperactivity and restlessness. For more information about childhood ADHD, please refer to our companion article on childhood ADHD. LINK

Adult ADHD Symptoms: Inattention

Easily distracted, difficulty focusing (e.g., tunes out in the middle of a page or conversation);

Often talks excessively or says whatever comes to mind without considering the timing or appropriateness of the remark;

Difficulty waiting his or her turn (in line, while driving, to speak see below); and,

May intrude into conversations or activities in an awkward and unwelcome manner.

The above items are the actual DSM-5 symptoms that form the diagnostic criteria for adult ADHD. However, as we will see next, there are many other symptomatic behaviors that are common in ADHD adults.

Other Common Adult ADHD Signs & Symptoms

Below is a list of other hyperactive or impulsive behaviors that may indicate adult ADHD. However, keep in mind, these symptoms are not unique to adult ADHD and may be indicative of other disorders. Therefore, it is important to seek help from a qualified mental health professional so that an accurate diagnosis can be made. Successful treatment hinges upon an accurate diagnosis.

The following list highlights some of the most prominent features of adult ADHD. These kinds of difficulties suggest a problem with an important brain function called executive functioning. In a sense, the executive function of the brain acts like a manager that prioritizes and sequences the work that needs to be done. Poorly developed executive function skills can result in several problems:

Difficulty redirecting attention away from distractions, and toward the task at hand;